Abstract: Pd/CeO2 catalysts prepared by a single step solution combustion synthesis (SCS) have been tested for the catalytic combustion of methane and their activity has been compared with Pd/CeO2 catalysts prepared by incipient wetness technique (IW). The materials have been characterized by XRD analysis, surface area measurement and TPO experiments. The results indicate that SCS Pd/CeO2 has a higher activity compared to IW samples. This has been ascribed to the formation of a Ce1-xPdxO2- solid solution with improved redox properties. Moreover, the additional oxide-ion vacancies enhance O2 dissociation leading to a highly active catalyst.
A single step route to highly active methane combustion catalysts
BOARO, Marta;COLUSSI, Sara;DE LEITENBURG, Carla;GAYEN, Arup;TROVARELLI, Alessandro
2008-01-01
Abstract
Abstract: Pd/CeO2 catalysts prepared by a single step solution combustion synthesis (SCS) have been tested for the catalytic combustion of methane and their activity has been compared with Pd/CeO2 catalysts prepared by incipient wetness technique (IW). The materials have been characterized by XRD analysis, surface area measurement and TPO experiments. The results indicate that SCS Pd/CeO2 has a higher activity compared to IW samples. This has been ascribed to the formation of a Ce1-xPdxO2- solid solution with improved redox properties. Moreover, the additional oxide-ion vacancies enhance O2 dissociation leading to a highly active catalyst.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
